Question

10 years hence, A will be twice as old as B was 10 years ago. If A is now 10 years older than B, find the present age of B.
I formed this equation for solving this sum:
x + 9 + 10 = 2(x - 10)
Where x + 9 is A's age and x is B's age.
Just wanted to know if I am right.

Answer 1

I got B's age as 39. Am I right??

Answer 2

is this the full question?

Answer 3

Yes it is.

Answer 4

A+10=2(b-10)

Answer 5

or actually, it's kind of confusing

Answer 6

10 years from the future or the present?

Answer 7

x + 9 + 10 denotes A's age 10 years hence. It is equal to 2(x - 10) which is twice of B's age 10 years ago.

Answer 8

im confused too

Answer 9

i guess ten years ago from 10 years in the future is the present, lol

Answer 10

You have a point there.

Answer 11

But then, they've given 10 years hence for A and 10 years ago for B.

Answer 12

Pretty sure the original equation i gave is correct

Answer 13

where did you get x + 9 from?

Answer 14

Which is same as mine right? Only thing I've replaced A with x + 9.

Answer 15

Well actually, they're not the same

Answer 16

x + 9 is A's present age(B's present age is x and A is 9 years older than B) .

Answer 17

I don't see anything about a 9 in the question...

Answer 18

Oh, I made a typing mistake its actually if A is 9 years older than B, find B's present age.....

Answer 19

Can you tell how? Because on solving the equation, I got 39 .....

Answer 20

let me double check

Answer 21

I'm sorry, you are right. B is presently 39 years old.

Answer 22

Thanks for helping.

Answer 23

A+10=2(B-10)
A=2B-30
A=B+9
B+9=2B-30
B=39

Answer 24

No problem